10000021111 has 2 divisors, whose sum is σ = 10000021112. Its totient is φ = 10000021110.

The previous prime is 10000021103. The next prime is 10000021139. The reversal of 10000021111 is 11112000001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10000021111 - 2³ = 10000021103 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10000021094 and 10000021103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10000021511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000010555 + 5000010556.

It is an arithmetic number, because the mean of its divisors is an integer number (5000010556).

Almost surely, 2^10000021111 is an apocalyptic number.

10000021111 is a deficient number, since it is larger than the sum of its proper divisors (1).

10000021111 is an equidigital number, since it uses as much as digits as its factorization.

10000021111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 10000021111 its reverse (11112000001), we get a palindrome (21112021112).

The spelling of 10000021111 in words is "ten billion, twenty-one thousand, one hundred eleven".